Lab: Physical and Chemical Changes

Question 1

Do you have a copy of the Student Guide, PDF or Word, for this lab, including your data table?

Revolt · Accepted Answer

yes

Question 2

Have you gathered all the materials needed?

Revolt · Accepted Answer

yes

Question 3

Which answer below correctly identifies the type of change and the explanation for the mixture of calcium carbonate and hydrochloric acid?

Revolt · Accepted Answer

chemical change because gas formation was observed, which indicated that the calcium carbonate was transformed into a different substance

Question 4

Which answer below correctly identifies the type of change and the explanation for the heating of copper(II) sulfate pentahydrate?

Revolt · Accepted Answer

chemical change because gas was released along with a color change, which indicated that the copper(II) sulfate pentahydrate was transformed into a different substance

Question 5

Which answer below correctly identifies the type of change and the explanation when potassium iodide and lead nitrate are mixed?

Revolt · Accepted Answer

chemical change because both a color change and a solid formation were observed, which provide strong evidence of a new substance

Question 6

Which answer below correctly identifies the type of change and the explanation when magnesium comes into contact with hydrochloric acid?

Revolt · Accepted Answer

chemical change because a temperature change occurred, a solid disappeared, and a gas was produced

Question 7

Which answer below correctly identifies the changes you observed and the explanation when a candle burns?

Revolt · Accepted Answer

both physical change because the wax melted and changed shape and chemical change because light and heat were formed as the candle burned

Question 8

Did you record all data throughout the virtual lab experiment?

Revolt · Accepted Answer

yes

Lab: Physical and Chemical Changes Answers

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